Digital DIC Flashing Zeros

**tdm571** · 12-05-2010

I just completed putting my 97 digital DIC into my 97 SE. Using the diagram from the howto thread, I connected everything up. Made a couple of changes because wire length, but I used wiring diagrams to ensure they were connected to the right places. I took A-1 to RAD-10 and B-3 to C2-E. Everything lights up correctly and the TRAC OFF button works properly. The Low Trac even lights up when I go over some rough terrain. Only problem is, all the data items are coming up with flashing zeros. Searching through the threads there are two suggestions as to the cause:

1.) The A-4 connection isn't hooked up to the C1-F connector. Well, mine is.
2.) The PCM is in program mode.

So my question is, if it is my PCM in program mode, how do I get it out of program mode? If not, what else could it be?

**matt5112** · 12-05-2010

does the DIC have tire pressure on it? If not, its not a 97.

**tdm571** · 12-05-2010

It does have the tire pressure and is indeed a 97. Truth be told, I've examined both the 97 and others thoroughly. The only difference I could see is the light is not installed and the cover sheet doesn't have the "check tire pressure" lettering on it. The functionality still looks to be there. GM just removed the wire to A4, the light and the lettering.

**matt5112** · 12-05-2010

i assume your PCM is stock?

**tdm571** · 12-05-2010

You are correct sir.

**tdm571** · 12-11-2010

Getting really tired of the blinking zeros!!!!!

**tdm571** · 12-16-2010

Ideas anyone?

**The Guz** · 12-17-2010

Recommend you check the wiring again per the diagram in the how to section. That diagram has been proven to be correct. The DIC could also be bad or the connection to the OBD connector is not good.